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25 //
26 // This example is provided by the Geant4-DNA collaboration
27 // Any report or published results obtained using the Geant4-DNA software
28 // shall cite the following Geant4-DNA collaboration publications:
29 // Med. Phys. 45 (2018) e722-e739
30 // Phys. Med. 31 (2015) 861-874
31 // Med. Phys. 37 (2010) 4692-4708
32 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
33 //
34 // The Geant4-DNA web site is available at http://geant4-dna.org
35 //
36 /// \file DetectorConstruction.cc
37 /// \brief Implementation of the DetectorConstruction class
38
39 #include "DetectorConstruction.hh"
40
41 #include "DetectorMessenger.hh"
42
43 #include "G4GeometryManager.hh"
44 #include "G4LogicalVolumeStore.hh"
45 #include "G4NistManager.hh"
46 #include "G4PVPlacement.hh"
47 #include "G4PhysicalConstants.hh"
48 #include "G4PhysicalVolumeStore.hh"
49 #include "G4RunManager.hh"
50 #include "G4SolidStore.hh"
51 #include "G4Sphere.hh"
52 #include "G4SystemOfUnits.hh"
53 #include "G4UnitsTable.hh"
54
55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56
57 DetectorConstruction::DetectorConstruction()
58 : G4VUserDetectorConstruction(), fAbsorMaterial(0), fAbsor(0), fDetectorMessenger(0)
59 {
60 // Default parameter values
61 fAbsorRadius = 1 * m;
62
63 DefineMaterials();
64 SetMaterial("G4_WATER");
65
66 // Create commands for interactive definition of the detector
67 fDetectorMessenger = new DetectorMessenger(this);
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
71
72 DetectorConstruction::~DetectorConstruction()
73 {
74 delete fDetectorMessenger;
75 }
76
77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
78
79 G4VPhysicalVolume* DetectorConstruction::Construct()
80 {
81 return ConstructVolumes();
82 }
83
84 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
85
86 void DetectorConstruction::DefineMaterials()
87 {
88 G4NistManager* man = G4NistManager::Instance();
89
90 man->FindOrBuildMaterial("G4_WATER");
91 }
92
93 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
94
95 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
96 {
97 G4GeometryManager::GetInstance()->OpenGeometry();
98 G4PhysicalVolumeStore::GetInstance()->Clean();
99 G4LogicalVolumeStore::GetInstance()->Clean();
100 G4SolidStore::GetInstance()->Clean();
101
102 // Spherical absorber
103 G4Sphere* sAbsor = new G4Sphere("Absorber", // name
104 0., fAbsorRadius, 0., twopi, 0., pi); // size
105
106 fLogicalAbsor = new G4LogicalVolume(sAbsor, // solid
107 fAbsorMaterial, // material
108 "Absorber"); // name
109
110 fAbsor = new G4PVPlacement(0, // no rotation
111 G4ThreeVector(), // at (0,0,0)
112 fLogicalAbsor, // logical volume
113 "Absorber", // name
114 0, // mother volume
115 false, // no boolean operation
116 0); // copy number
117
118 PrintParameters();
119
120 return fAbsor;
121 }
122
123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
124
125 void DetectorConstruction::PrintParameters() const
126 {
127 G4cout << "\n---------------------------------------------------------\n";
128 G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
129 << " radius of " << fAbsorMaterial->GetName() << " made of"
130 << "\n \n"
131 << fAbsorMaterial << G4endl;
132 G4cout << "\n---------------------------------------------------------\n";
133 }
134
135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
136
137 void DetectorConstruction::SetRadius(G4double value)
138 {
139 fAbsorRadius = value;
140 G4RunManager::GetRunManager()->ReinitializeGeometry();
141 }
142
143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
144
145 void DetectorConstruction::SetMaterial(G4String materialChoice)
146 {
147 // Search the material by its name
148 G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
149 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
150 if (pttoMaterial) fAbsorMaterial = pttoMaterial;
151 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
152 }
153